Answers: 0. Puzzles 1. Strategy games 2. Adventure games 3. Role playing games 4. Role playing games 5. mnemonics 6. Multiplayer interaction 7. Timed games 8. Role playing games 9. Persistent state games 10. Concentration games 11. Strategy games 12. Open ended simulation games 13. Flashcard games 14. Invention games 15. Flash card games